Display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel comprises a substrate, an isolation structure, a light-emitting functional layer, and a first electrode. The isolation structure is provided with an isolation opening. The orthogonal projection of the isolation opening on the substrate comprises a first side and a second side. The length of the first side is greater than the length of the second side. The first electrode comprises a first subpart and a second subpart. The first subpart is the part of the first electrode that overlaps the isolation structure corresponding to the first side. The second subpart is the part of the first electrode that overlaps the isolation structure corresponding to the second side. In the thickness direction of the display panel, the distance between the end of the first subpart away from the substrate and the plane of the first surface is a first distance. The distance between the end of the second subpart away from the substrate and the plane of the first surface is a second distance. The first distance is greater than the second distance. The impedance between the corresponding first subpart and the isolation structure corresponding to the first side is reduced. The display effect of the display panel is improved. The reliability of the display panel is improved.

Description

Technical Field

[0001] This application belongs to the field of display technology, and in particular relates to a display panel and display device. Background Technology

[0002] In traditional display panel manufacturing, a fine metal mask (FMM) is typically used to pattern the light-emitting pixels. FMM technology is mature and has extensive mass production experience. However, FMM technology also suffers from limitations in precision, high development costs, and long development cycles. Fine metal mask-less technology eliminates the limitations of traditional OLED processes on display size, resolution, and other screen performance characteristics, offering advantages such as high performance, global size, and agile delivery. Patents CN118251982A, CN116648095A, CN117062489A, CN118742138A, CN118678783A, CN118660598A, CN118675450A, CN118824188A, and CN118781966A describe relevant content regarding fine metal mask-less display panel manufacturing technology, for reference. Summary of the Invention

[0003] This application provides a display panel and display device. By limiting the first distance between the first sub-part corresponding to the first side to be greater than the second distance between the second sub-part corresponding to the second side, the overlap area between the first sub-part and the isolation structure corresponding to the first side is further increased, the impedance between the corresponding first sub-part and the isolation structure corresponding to the first side is reduced, thereby improving the display effect of the display panel, reducing the occurrence rate of dark spots or dark patches, and improving the reliability of the display panel.

[0004] This application provides a display panel, comprising: a substrate; an isolation structure disposed on one side of the substrate, the isolation structure having an isolation opening, the isolation opening having a first side and a second side in its orthographic projection onto the substrate, the length of the first side being greater than the length of the second side; a light-emitting functional layer, the light-emitting functional layer being at least partially located within the isolation opening; a first electrode, the first electrode being located on the side of the light-emitting functional layer away from the substrate and overlapping with the isolation structure, the first electrode comprising a first sub-part and a second sub-part, the first sub-part being the portion of the first electrode overlapping with the isolation structure corresponding to the first side, and the second sub-part being the portion of the first electrode overlapping with the isolation structure corresponding to the second side; the isolation structure comprising a first surface near the substrate, wherein along the thickness direction of the display panel, the distance between the end of the first sub-part away from the substrate and the surface of the first surface is a first distance, and the distance between the end of the second sub-part away from the substrate and the surface of the first surface is a second distance, the first distance being greater than the second distance.

[0005] According to one aspect of this application, the angle between the extension direction of the first side and the extension direction of the second side is greater than or equal to 0° and less than or equal to 10°; preferably, the first side and the second side are parallel; preferably, the first side and the second side are at least partially opposite each other along the extension direction perpendicular to the first side.

[0006] According to one aspect of this application, both the first edge and the second edge are straight edges, or at least one of the first edge and the second edge is a curved edge.

[0007] According to one aspect of this application, the first side is the longest side in the orthographic projection pattern edge of the isolation opening on the substrate; preferably, the orthographic projection pattern of the isolation opening on the substrate is polygonal; preferably, the orthographic projection pattern of the isolation opening on the substrate is hexagonal or trapezoidal.

[0008] According to one aspect of this application, the isolation opening further includes a third side in the orthographic projection pattern of the substrate, wherein the extension direction of the first side intersects the extension direction of the third side, and the length of the third side is less than the length of the first side; the first electrode further includes a third sub-part, which is the portion of the first electrode overlapping the isolation structure corresponding to the third side; along the thickness direction of the display panel, the distance between the end of the third sub-part away from the substrate and the surface containing the first surface is a third distance, which is less than the first distance; preferably, in a cross-section along the thickness direction of the display panel, the length of contact between the first sub-part of the first electrode and the inner wall surface of the isolation structure is a first contact length, and the length of contact between the third sub-part of the first electrode and the inner wall surface of the isolation structure is a third contact length, wherein the first contact length is greater than the third contact length, and the inner wall surface of the isolation structure is the surface of the isolation structure facing the isolation opening;

[0009] Preferably, the overlap area per unit length between the first sub-part of the first electrode and the isolation structure is a first unit length area, and the overlap area per unit length between the third sub-part of the first electrode and the isolation structure is a third unit length area. The first unit length area is greater than the third unit length area. The first unit length area is the ratio of the total overlap area between the first sub-part of the first electrode and the isolation structure to the length of the first side, and the third unit length area is the ratio of the total overlap area between the third sub-part of the first electrode and the isolation structure to the length of the second side.

[0010] According to one aspect of this application, the length of the third side is less than the length of the second side; preferably, the third distance is less than the second distance; preferably, in a cross-section along the thickness direction of the display panel, the length of contact between the second sub-part of the first electrode and the inner wall surface of the isolation structure is the second contact length, the length of contact between the third sub-part of the first electrode and the inner wall surface of the isolation structure is the third contact length, and the second contact length is greater than the third contact length; preferably, the unit length overlap area between the second sub-part of the first electrode and the isolation structure is the second unit length area, the unit length overlap area between the third sub-part of the first electrode and the isolation structure is the third unit length area, and the second unit length area is greater than the third unit length area, wherein the second unit length area is the ratio of the total overlap area between the second sub-part of the first electrode and the isolation structure to the length of the second side, and the third unit length area is the ratio of the total overlap area between the third sub-part of the first electrode and the isolation structure to the length of the third side.

[0011] According to one aspect of this application, the first side and the second side are arranged opposite to each other and parallel to each other; the isolation opening in the orthographic projection pattern of the substrate further includes a fourth side, the extension direction of the fourth side intersects the extension direction of the third side, the length of the fourth side is less than the length of the first side, and the fourth side and the third side are arranged opposite to each other; the first electrode further includes a fourth sub-part, the fourth sub-part being the portion of the first electrode overlapping the isolation structure corresponding to the fourth side; preferably, along the thickness direction of the display panel, the distance between the end of the fourth sub-part away from the substrate and the surface where the first surface is located is a fourth distance, and the fourth distance is less than the first distance.

[0012] According to one aspect of this application, the length of the fourth side is less than the length of the second side; preferably, the fourth distance is less than the second distance; preferably, in a cross-section along the thickness direction of the display panel, the length of contact between the second sub-part of the first electrode and the inner wall surface of the isolation structure is the second contact length, the length of contact between the fourth sub-part of the first electrode and the inner wall surface of the isolation structure is the fourth contact length, and the second contact length is greater than the fourth contact length; preferably, the unit length overlap area between the second sub-part of the first electrode and the isolation structure is the second unit length area, the unit length overlap area between the fourth sub-part of the first electrode and the isolation structure is the fourth unit length area, and the second unit length area is greater than the fourth unit length area, wherein the second unit length area is the ratio of the total overlap area between the second sub-part of the first electrode and the isolation structure to the length of the second side, and the fourth unit length area is the ratio of the total overlap area between the fourth sub-part of the first electrode and the isolation structure to the length of the fourth side.

[0013] According to one aspect of this application, the display panel further includes a conductive layer disposed between the substrate and the isolation structure; the conductive layer includes a data signal line extending along a first direction, the extension direction of the first side being parallel to the first direction; preferably, the extension direction of the second side is parallel to the first direction.

[0014] According to one aspect of this application, the maximum thickness of the first sub-part is greater than the maximum thickness of the second sub-part; or, the average thickness of the first sub-part is greater than the average thickness of the second sub-part.

[0015] According to one aspect of this application, in a cross-section along the thickness direction of the display panel, the length of contact between the first sub-part of the first electrode and the inner wall surface of the isolation structure is a first contact length, and the length of contact between the second sub-part of the first electrode and the inner wall surface of the isolation structure is a second contact length; wherein, the first contact length is greater than the second contact length, and the inner wall surface of the isolation structure is the surface of the isolation structure facing the isolation opening.

[0016] According to one aspect of this application, the overlap area per unit length between the first sub-part of the first electrode and the isolation structure is a first unit length area, and the overlap area per unit length between the second sub-part of the first electrode and the isolation structure is a second unit length area, wherein the first unit length area is greater than the second unit length area; wherein, the first unit length area is the ratio of the total overlap area between the first sub-part of the first electrode and the isolation structure to the length of the first side, and the second unit length area is the ratio of the total overlap area between the second sub-part of the first electrode and the isolation structure to the length of the second side.

[0017] According to one aspect of this application, along a direction away from the substrate, the isolation structure includes a first sublayer and a second sublayer stacked together, with a first sub-portion of the first electrode overlapping the first sublayer; preferably, the orthographic projection of the first sublayer onto the substrate is located within the orthographic projection of the second sublayer onto the substrate.

[0018] According to one aspect of this application, the isolation structure further includes a third sublayer located on the side of the first sublayer facing away from the second sublayer, wherein the first sub-part and the second sub-part of the first electrode both overlap with the third sublayer; preferably, the orthographic projection of the third sublayer onto the substrate is located within the orthographic projection of the second sublayer onto the substrate.

[0019] According to one aspect of this application, the light-emitting functional layer includes light-emitting units, the light-emitting units including a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, the first light-emitting unit being used to emit light of a first color, the second light-emitting unit being used to emit light of a second color, and the third light-emitting unit being used to emit light of a third color; the display panel includes a first isolation opening, a second isolation opening and a third isolation opening, at least a portion of the first light-emitting units being located within the first isolation opening, at least a portion of the second light-emitting units being located within the second isolation opening, and at least a portion of the third light-emitting units being located within the third isolation opening.

[0020] According to one aspect of this application, the orthographic projection area of ​​the first isolation opening on the substrate is smaller than the orthographic projection area of ​​the second isolation opening on the substrate, and the orthographic projection area of ​​the first isolation opening on the substrate is smaller than the orthographic projection area of ​​the third isolation opening on the substrate; the orthographic projection pattern of the first isolation opening on the substrate includes the first side and the second side.

[0021] According to one aspect of this application, the first isolation opening, the second isolation opening, and the third isolation opening, in their orthographic projections onto the substrate, all include the first side and the second side; the first sides of the first isolation opening, the second isolation opening, and the third isolation opening are arranged parallel to each other; preferably, the lengths of the first sides of the first isolation opening, the second isolation opening, and the third isolation opening are all equal; preferably, the first sub-part of the first electrode includes a first sub-part located within the first isolation opening, a first sub-part located within the second isolation opening, and a first sub-part located within the third isolation opening, and the first distances of the first sub-parts located within the first isolation opening, the second isolation opening, and the third isolation opening are all equal; preferably, the second sub-part of the first electrode includes a second sub-part located within the first isolation opening, a second sub-part located within the second isolation opening, and a second sub-part located within the third isolation opening.

[0022] According to one aspect of this application, it further includes: a pixel definition layer disposed on the side of the isolation structure near the substrate, the pixel definition layer having a pixel opening, the orthographic projection of the pixel opening onto the substrate being located within the orthographic projection of the isolation opening onto the substrate, preferably at least a portion of the light-emitting functional layer being located within the pixel opening, and the centroid of the orthographic projection pattern of the pixel opening onto the substrate coinciding with the centroid of the orthographic projection pattern of the isolation opening onto the substrate.

[0023] According to one aspect of this application, the display panel further includes an encapsulation layer; the encapsulation layer includes a first encapsulation layer comprising a plurality of first encapsulation units spaced apart from each other, the first encapsulation units being located on the side of the first electrode facing away from the substrate, and at least a portion of the first encapsulation units also covering the sidewall of the isolation structure facing the isolation opening and extending to the side of the isolation structure facing away from the substrate; preferably, the material of the first encapsulation layer comprises an inorganic material; preferably, the encapsulation layer further includes a second encapsulation layer located on the side of the first encapsulation layer facing away from the substrate, the material of the second encapsulation layer comprising an organic material; the encapsulation layer further includes a third encapsulation layer located on the side of the second encapsulation layer facing away from the substrate, the material of the third encapsulation layer comprising an inorganic material; preferably, the display panel further includes a second electrode located on the side of the light-emitting functional layer facing the substrate; the orthographic projection of the second electrode on the substrate and the orthographic projection of the isolation opening on the substrate at least partially overlap.

[0024] Another embodiment of this application provides a display panel, comprising: a substrate; an isolation structure disposed on one side of the substrate, the isolation structure having an isolation opening, the isolation opening having a first side and a second side in its orthographic projection onto the substrate, the length of the first side being greater than the length of the second side; a light-emitting functional layer, the light-emitting functional layer being at least partially located within the isolation opening; a first electrode, the first electrode being located on the side of the light-emitting functional layer opposite to the substrate and overlapping with the isolation structure, the first electrode comprising a first sub-part and a second sub-part, the first sub-part being the portion of the first electrode overlapping with the isolation structure corresponding to the first side, the second sub-part being the portion of the first electrode overlapping with the isolation structure corresponding to the second side; the unit length overlap area of ​​the first sub-part of the first electrode overlapping with the isolation structure is a first unit length area, the unit length overlap area of ​​the second sub-part of the first electrode overlapping with the isolation structure is a second unit length area, the first unit length area being greater than the second unit length area; wherein, the first unit length area is the ratio of the total area of ​​the first sub-part of the first electrode overlapping with the isolation structure to the length of the first side, and the second unit length area is the ratio of the total area of ​​the second sub-part of the first electrode overlapping with the isolation structure to the length of the second side.

[0025] According to another aspect of this application, the first side and the second side are parallel; preferably, the first side and the second side are at least partially opposite each other along an extension direction perpendicular to the first side; preferably, the first side is the longest side of the isolation opening in the orthographic projection pattern edge of the substrate.

[0026] Another aspect of this application provides a display panel, comprising: a substrate; an isolation structure disposed on one side of the substrate, the isolation structure having an isolation opening, the isolation opening having a first side and a second side in its orthographic projection onto the substrate, the length of the first side being greater than the length of the second side; a light-emitting functional layer, the light-emitting functional layer being at least partially located within the isolation opening; a first electrode, the first electrode being located on the side of the light-emitting functional layer opposite to the substrate and overlapping with the isolation structure, the first electrode comprising a first sub-part and a second sub-part, the first sub-part being the portion of the first electrode overlapping with the isolation structure corresponding to the first side, the second sub-part being the portion of the first electrode overlapping with the isolation structure corresponding to the second side; the maximum thickness of the first sub-part being greater than the maximum thickness of the second sub-part.

[0027] According to another aspect of this application, the first side and the second side are parallel; preferably, the first side and the second side are at least partially opposite each other along an extension direction perpendicular to the first side; preferably, the first side is the longest side of the isolation opening in the orthographic projection pattern edge of the substrate.

[0028] This application provides another aspect of a display panel, comprising: a substrate; an isolation structure disposed on one side of the substrate, the isolation structure having an isolation opening, the isolation opening having a first side and a second side in its orthographic projection onto the substrate, the length of the first side being greater than the length of the second side; a light-emitting functional layer, the light-emitting functional layer being at least partially located within the isolation opening; a first electrode, the first electrode being located on the side of the light-emitting functional layer away from the substrate and overlapping with the isolation structure, the first electrode comprising a first sub-part and a second sub-part, the first sub-part being the portion of the first electrode overlapping with the isolation structure corresponding to the first side, and the second sub-part being the portion of the first electrode overlapping with the isolation structure corresponding to the second side; in a cross-section along the thickness direction of the display panel, the length of contact between the first sub-part of the first electrode and the inner wall surface of the isolation structure is a first contact length, and the length of contact between the second sub-part of the first electrode and the inner wall surface of the isolation structure is a second contact length; wherein, the first contact length is greater than the second contact length, and the inner wall surface of the isolation structure is the surface of the isolation structure facing the isolation opening.

[0029] According to another aspect of this application, the first side and the second side are parallel; preferably, along an extension direction perpendicular to the first side, the first side and the second side are at least partially opposite to each other.

[0030] According to another aspect of this application, the first side is the longest side of the isolation opening in the orthographic projection pattern edge of the substrate.

[0031] This application provides another aspect of a display panel, comprising: a substrate; an isolation structure disposed on one side of the substrate, the isolation structure having an isolation opening, the isolation opening having a first side and a third side in its orthographic projection onto the substrate, the extension directions of the first side and the third side intersecting, and the length of the first side being greater than the length of the third side; a light-emitting functional layer, the light-emitting functional layer being at least partially located within the isolation opening; a first electrode, the first electrode being located on the side of the light-emitting functional layer away from the substrate and overlapping with the isolation structure, the first electrode comprising a first sub-part and a third sub-part, the first sub-part being the portion of the first electrode overlapping with the isolation structure corresponding to the first side, and the third sub-part being the portion of the first electrode overlapping with the isolation structure corresponding to the third side; the isolation structure comprising a first surface near the substrate, the distance between the end of the first sub-part away from the substrate and the surface of the first surface along the thickness direction of the display panel being a first distance, the distance between the end of the third sub-part away from the substrate and the surface of the first surface being a third distance, and the first distance being greater than the third distance.

[0032] According to another aspect of this application, the isolation opening in the orthographic projection pattern of the substrate further includes a second side, the length of the first side being equal to the length of the second side; preferably, the isolation opening in the orthographic projection pattern of the substrate further includes a fourth side, the first side and the second side being opposite to and parallel to each other, and the third side and the fourth side being opposite to and parallel to each other.

[0033] According to another aspect of this application, the first electrode further includes a second sub-part, which is the portion of the first electrode that overlaps with the isolation structure corresponding to the second side; along the thickness direction of the display panel, the distance between the end of the second sub-part away from the substrate and the surface where the first surface is located is a second distance, and the first distance is greater than or equal to the second distance; preferably, the first distance is greater than the second distance.

[0034] According to another aspect of this application, the first electrode further includes a second sub-part, which is the portion of the first electrode that overlaps with the isolation structure corresponding to the second side; along the thickness direction of the display panel, the distance between the end of the second sub-part away from the substrate and the surface where the first surface is located is a second distance, which is greater than the third distance.

[0035] According to another aspect of this application, in a cross-section along the thickness direction of the display panel, the length of contact between the first sub-part of the first electrode and the inner wall surface of the isolation structure is a first contact length, and the length of contact between the third sub-part of the first electrode and the inner wall surface of the isolation structure is a third contact length; wherein, the first contact length is greater than the third contact length, and the inner wall surface of the isolation structure is the surface of the isolation structure facing the isolation opening; preferably, the unit length overlap area between the first sub-part of the first electrode and the isolation structure is a first unit length area, and the unit length overlap area between the third sub-part of the first electrode and the isolation structure is a third unit length area, and the first unit length area is greater than the third unit length area; wherein, the first unit length area is the ratio of the total overlap area between the first sub-part of the first electrode and the isolation structure to the length of the first side, and the third unit length area is the ratio of the total overlap area between the third sub-part of the first electrode and the isolation structure to the length of the third side. Another aspect of this application provides a display device including the display panel of any of the above embodiments.

[0036] Compared with the prior art, the display panel provided in this embodiment of the invention includes a substrate, an isolation structure, and a first electrode. The light-emitting functional layer is at least partially located in the isolation opening so that the light emitted from the light-emitting functional layer can be emitted through the isolation opening. The length of the first side of the isolation opening in the orthographic projection pattern of the substrate is greater than the length of the second side. This embodiment further increases the overlap area between the first sub-part and the isolation structure corresponding to the first side by correspondingly limiting the first distance between the first sub-part and the isolation structure corresponding to the first side to be greater than the second distance between the second sub-part and the second side, thereby reducing the impedance between the corresponding first sub-part and the isolation structure corresponding to the first side, thereby improving the display effect of the display panel, reducing the occurrence rate of dark spots or dark patches, and improving the reliability of the display panel. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the structure of a display panel provided in one embodiment of the present invention;

[0039] Figure 2 This is provided by one embodiment of the present invention. Figure 1 A magnified view of a portion of point Q;

[0040] Figure 3This is provided by one embodiment of the present invention. Figure 2 Cross-sectional view at point AA;

[0041] Figure 4 This is provided by one embodiment of the present invention. Figure 3 A magnified view of a section at point A in the middle;

[0042] Figure 5 This is provided by one embodiment of the present invention. Figure 2 Cross-sectional view at point CC;

[0043] Figure 6 This is provided by another embodiment of the present invention. Figure 1 A magnified view of a portion of point Q;

[0044] Figure 7 This is a schematic diagram of the structure of the conductive layer provided in one embodiment of the present invention;

[0045] Figure 8 This is provided by another embodiment of the present invention. Figure 2 Cross-sectional view at point AA;

[0046] Figure 9 This is provided by yet another embodiment of the present invention. Figure 2 Cross-sectional view at point AA;

[0047] Figure 10 This is provided by yet another embodiment of the present invention. Figure 1 A magnified view of a portion of point Q;

[0048] Figure 11 This is provided by yet another embodiment of the present invention. Figure 10 Cross-sectional view at point MM.

[0049] In the attached image:

[0050] 10. Display panel; 1. Substrate; 2. Isolation structure; 21. First sublayer; 22. Second sublayer; 23. Third sublayer; 3. First electrode; 4. Light-emitting functional layer; 5. Second electrode; 6. Pixel definition layer; 61. Pixel aperture; 7. Encapsulation layer; 71. First encapsulation layer; 72. Second encapsulation layer; 73. Third encapsulation layer;

[0051] K, Isolation opening; K1, First isolation opening; K2, Second isolation opening; K3, Third isolation opening; F1, First light-emitting unit; F2, Second light-emitting unit; F3, Third light-emitting unit; B1, First side; B2, Second side; B3, Third side; B4, Fourth side; B5, Fifth side; B6, Sixth side; L, Conductive layer; N1, First surface; Z1, First sub-section; Z2, Second sub-section; Z3, Third sub-section; Z4, Fourth sub-section; V, Transistor; S, Source; G, Drain; W, Active layer; DATA, Data signal line; SCAN, Scan signal line; Y, First direction; X, Second direction. Detailed Implementation

[0052] The features and exemplary embodiments of various aspects of this application will now be described in detail. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this application and are not configured to limit this application. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples of this application.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0054] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.

[0055] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this application can be combined with each other without contradiction.

[0056] This application provides a display panel and a display device, which will be described below in conjunction with the accompanying drawings. Figures 1 to 11 Various embodiments of the display panel and display device will be described.

[0057] Please see Figures 1 to 4 This application provides a display panel 10, comprising: a substrate 1; an isolation structure 2 disposed on one side of the substrate 1, the isolation structure 2 having an isolation opening K, the orthographic projection of the isolation opening K onto the substrate 1 including a first side B1 and a second side B2, the length of the first side B1 being greater than the length of the second side B2; a light-emitting functional layer 4, at least partially located within the isolation opening K; and a first electrode 3 located on the side of the light-emitting functional layer 4 away from the substrate 1 and overlapping with the isolation structure 2, the first electrode 3 including a first sub-part Z1 and a second sub-part Z2. The first sub-part Z1 is the part where the first electrode 3 overlaps with the isolation structure 2 corresponding to the first side B1, and the second sub-part Z2 is the part where the first electrode 3 overlaps with the isolation structure 2 corresponding to the second side B2. The isolation structure 2 includes a first surface N1 close to the substrate 1. Along the thickness direction of the display panel 10, the distance between the end of the first sub-part Z1 away from the substrate 1 and the surface where the first surface N1 is located is a first distance P1, and the distance between the end of the second sub-part Z2 away from the substrate 1 and the surface where the first surface N1 is located is a second distance P2. The first distance P1 is greater than the second distance P2.

[0058] The display panel 10 provided in this embodiment of the invention includes a substrate 1, an isolation structure 2, and a first electrode 3. The light-emitting functional layer 4 is at least partially located in the isolation opening K, so that the light emitted from the light-emitting functional layer 4 can be emitted through the isolation opening K. The length of the first side B1 of the isolation opening K in the orthographic projection pattern of the substrate 1 is greater than the length of the second side B2. In this embodiment, by correspondingly limiting the first distance P1 of the first sub-part Z1 corresponding to the first side B1 to be greater than the second distance P2 of the second sub-part Z2 corresponding to the second side B2, the overlap area of ​​the first sub-part Z1 and the isolation structure 2 corresponding to the first side B1 is further increased, the impedance between the corresponding first sub-part Z1 and the isolation structure 2 corresponding to the first side B1 is reduced, thereby improving the display effect of the display panel 10, reducing the occurrence rate of dark spots or dark patches, and improving the reliability of the display panel 10.

[0059] Through research and experimentation, the inventors discovered that when the length of the first side B1 is greater than the length of the second side B2, by adjusting the vapor deposition angle, the first distance P1 can be greater than the second distance P2, resulting in a better display effect than when the first distance P1 is equal to the second distance P2.

[0060] In this embodiment, the first side B1 and the second side B2 can be two adjacent sides that are connected, or they can be two unconnected sides. There is no special limitation on the relative position of the first side B1 and the second side B2, only the length relationship between the first side B1 and the second side B2 is limited.

[0061] In this embodiment, the first sub-part Z1 can be directly connected to the isolation structure 2 corresponding to the first side B1, that is, the first sub-part Z1 can be in contact with the isolation structure 2 corresponding to the first side B1. Alternatively, the first sub-part Z1 can also be indirectly connected to the isolation structure 2 corresponding to the first side B1. Other conductive film layers can also be provided on the first side B1 and the isolation structure 2 as needed. Similarly, the second sub-part Z2 can be directly connected to the isolation structure 2 corresponding to the second side B2, that is, the second sub-part Z2 can be in contact with the isolation structure 2 corresponding to the second side B2. Alternatively, the second sub-part Z2 can also be indirectly connected to the isolation structure 2 corresponding to the second side B2. Other conductive film layers can also be provided on the second side B2 and the isolation structure 2 as needed.

[0062] Optionally, the first sub-part Z1 and the second sub-part Z2 can be respectively attached to the inner wall surfaces corresponding to the first side B1 and the second side B2 of the isolation structure 2, and the inner wall surface of the isolation structure 2 is the surface of the isolation structure 2 facing the isolation opening K.

[0063] It should be noted that, along the thickness direction of the display panel 10, the end of the first sub-part Z1 away from the substrate 1 corresponds to the highest point of the first sub-part Z1 on the first side B1. Similarly, along the thickness direction of the display panel 10, the end of the second sub-part Z2 away from the substrate 1 corresponds to the highest point of the second sub-part Z2 on the second side B2. Through research and experimentation, the inventors have found that increasing the distance between the first electrode 3 and the isolation structure 2 can correspondingly increase the overlap area between the first electrode 3 and the isolation structure 2. That is, in this embodiment, by limiting the first distance P1 to be greater than the second distance P2, the overlap area between the first sub-part Z1 and the isolation structure 2 is increased, the impedance between the first sub-part Z1 and the isolation structure 2 is improved, and the display effect of the display panel 10 is improved.

[0064] Optionally, substrate 1 may include a substrate and an array layer, the array layer including a driving circuit. For example, the array layer may include a first conductive layer, a second conductive layer, and a third conductive layer disposed on one side of substrate 1 and stacked thereon. An insulating layer is disposed between adjacent conductive film layers. Exemplarily, the pixel driving circuit disposed on the array layer includes a transistor V and a storage capacitor. Transistor V includes an active layer W, a gate G, a source S, and a drain D. The materials of the source S and the gate G may include one or more combinations of molybdenum, titanium, aluminum, copper, etc. The gate of transistor V is typically used to receive a control signal, causing transistor V to be turned on or off under the control of the control signal. One of the source S and the drain D of transistor V is connected to a light-emitting unit to control the normal light emission of the light-emitting unit.

[0065] Optionally, the light-emitting functional layer 4 may include one or more of the following: an electron injection layer, an electron transport layer, a light-emitting material layer, a hole blocking layer, an electron blocking layer, a hole transport layer, and a hole injection layer. The specific type of light-emitting layer can be selected based on its specific characteristics, and there are no particular limitations.

[0066] Optionally, the material of the first electrode 3 can be one of the following metals: silver (Ag), aluminum (Al), lithium (Li), magnesium (Mg), ytterbium (Yb), calcium (Ca), or indium (In). It can also be an alloy of the aforementioned metals, such as magnesium-silver alloy (Mg / Ag) or lithium-aluminum alloy (Li / Al). This embodiment does not limit this.

[0067] Please see Figure 2 In some optional embodiments, the angle between the extension direction of the first side B1 and the extension direction of the second side B2 is greater than or equal to 0° and less than or equal to 10°, so that compared with other sides (such as the third side B3), the first side B1 and the second side B2 can be effective overlapping edges with the first sub-part Z1 and the second sub-part Z2 formed corresponding to the line evaporation source, reducing the difficulty of preparation.

[0068] It is understandable that when the angle between the extension direction of the first side B1 and the extension direction of the second side B2 is equal to 0°, the first side B1 and the second side B2 are parallel. It should be noted that, considering the manufacturing cost and manufacturing difficulty, the first electrode 3 is effectively connected by using the partial isolation structure 2 corresponding to the parallel first side B1 and the second side B2. When the first side B1 and the second side B2 are parallel, the corresponding isolation opening K can be in the orthographic projection pattern of the substrate 1 in the shape of a trapezoid, hexagon, etc.

[0069] Optionally, the extension direction of the first side B1 and the extension direction of the second side B2 can be approximately parallel, or, within the range of process error, the two can be set to be parallel.

[0070] Optionally, along the extension direction perpendicular to the first side B1, the first side B1 and the second side B2 are at least partially opposite to each other, that is, along the extension direction perpendicular to the first side B1, the first side B1 and the second side B2 are arranged sequentially to improve the regularity of the isolation opening K and facilitate the subsequent evaporation of the first electrode 3.

[0071] Please see Figure 2 In some optional embodiments, both the first side B1 and the second side B2 are straight edges, which reduces the difficulty of manufacturing and is conducive to achieving that the distance between the ends of the first sub-part Z1 at different positions away from the substrate 1 and the surface where the first surface N1 is located is equal everywhere, and the distance between the ends of the second sub-part Z2 at different positions away from the substrate 1 and the surface where the first surface N1 is located is equal everywhere, which makes it easy to adjust and control the first distance P1 and the second distance P2.

[0072] It should be noted that when both the first side B1 and the second side B2 are straight sides, the extension directions of the first side B1 and the second side B2 are the extension directions of the corresponding straight sides of the first side B1 and the second side B2.

[0073] In some alternative embodiments, at least one of the first side B1 and the second side B2 is a curved edge. In this case, since the first sub-part Z1 and the second sub-part Z2 are usually formed by scanning using a line evaporation source, optionally, when both the first side B1 and the second side B2 are curved edges, the line connecting the highest points of the ends of the first sub-part Z1 at different positions away from the substrate 1 is a curve, and the line connecting the highest points of the ends of the second sub-part Z2 at different positions away from the substrate 1 is also a curve. In this case, the first distance P1 can refer to the average or maximum value of the height of the highest points of the ends of the first sub-part Z1 at different positions away from the substrate 1, and the second distance P2 can refer to the average or maximum value of the height of the highest points of the ends of the second sub-part Z2 at different positions away from the substrate 1.

[0074] It should be noted that when both the first side B1 and the second side B2 are curved, the extension direction of the first side B1 can refer to the extension direction of the tangent corresponding to a certain point on the first side B1, such as the extension direction of the tangent corresponding to the midpoint of the first side B1. Similarly, the extension direction of the second side B2 can refer to the extension direction of the tangent corresponding to a certain point on the second side B2, such as the extension direction of the tangent corresponding to the midpoint of the second side B2.

[0075] In some optional embodiments, the first side B1 is the longest side of the orthographic projection pattern of the isolation opening K on the substrate 1. It can be understood that the lengths of the other edges of the orthographic projection pattern of the isolation opening K on the substrate 1 are all less than the length of the first side B1, that is, the first distance P1 corresponding to the first sub-part Z1 is greater than the distance of the other parts of the first electrode 3 on the isolation structure 2.

[0076] Optionally, the orthographic projection of the isolation opening K onto the substrate 1 is polygonal, meaning that the edges of the orthographic projection of the isolation opening K onto the substrate 1 are all straight edges, which facilitates fabrication.

[0077] Optionally, the isolation opening K can be projected onto the substrate 1 in the form of either a hexagon or a trapezoid. The specific shape can be selected according to the actual pixel arrangement requirements, without any special limitations.

[0078] For example, when the orthographic projection of the isolation opening K onto the substrate 1 is trapezoidal, the first side B1 can correspond to the base of the trapezoid, and the second side B2 can correspond to the top or waist of the trapezoid. In other embodiments, the extending direction of the first side B1 can also intersect the extending direction of the second side B2.

[0079] Please see Figure 2 , Figure 4 as well as Figure 5 In some optional embodiments, the orthographic projection of the isolation opening K onto the substrate 1 further includes a third side B3, the extension direction of the first side B1 intersects the extension direction of the third side B3, and the length of the third side B3 is less than the length of the first side B1; the first electrode 3 further includes a third sub-part Z3, the third sub-part Z3 being the portion of the first electrode 3 overlapping with the isolation structure 2 corresponding to the third side B3; along the thickness direction of the display panel 10, the distance between the end of the third sub-part Z3 away from the substrate 1 and the surface where the first surface N1 is located is a third distance P3, and the first distance P1 is greater than the third distance P3.

[0080] In this embodiment, the orthographic projection of the isolation opening K onto the substrate 1 includes a first side B1, a second side B2, and a third side B3. These three sides can be connected sequentially or in other connection orders, without any particular limitation. Since the length of the third side B3 is less than the length of the first side B1, i.e., the third side B3 is also a shorter side relative to the first side B1, the first distance P1 can be limited to be greater than the third distance P3. This increases the overlap area between the first sub-part Z1 and the isolation structure 2 corresponding to the first side B1, reduces the impedance between the corresponding first sub-part Z1 and the isolation structure 2 corresponding to the first side B1, and improves the display effect of the display panel 10.

[0081] In some optional embodiments, on a cross section along the thickness direction of the display panel 10, the length of contact between the first sub-part Z1 of the first electrode 3 and the inner wall surface of the isolation structure 2 is the first contact length J1, and the length of contact between the third sub-part Z3 of the first electrode 3 and the inner wall surface of the isolation structure 2 is the third contact length J3; wherein, the first contact length J1 is greater than the third contact length J3, and the inner wall surface of the isolation structure 2 is the surface of the isolation structure 2 facing the isolation opening K.

[0082] It should be noted that the cross section along the thickness direction of the display panel 10 may include a first plane and a third plane. Optionally, the first plane is perpendicular to the extension direction of the first side B1, and the third plane is perpendicular to the extension direction of the third side B3. The first contact length J1 is the length of the first sub-part Z1 of the first electrode 3 in contact with the inner wall surface of the isolation structure 2 on the first plane, and the third contact length J3 is the length of the third sub-part Z3 of the first electrode 3 in contact with the inner wall surface of the isolation structure 2 on the third plane.

[0083] Through the inventor's research and experiments, it was found that the first contact length J1 is greater than the third contact length J3, and the overlap effect between the first sub-part Z1 and the inner wall of the isolation structure 2 is better than the overlap effect between the third sub-part Z3 and the inner wall of the isolation structure 2.

[0084] In some optional embodiments, the overlap area per unit length between the first sub-part Z1 of the first electrode 3 and the isolation structure 2 is the first unit length area, and the overlap area per unit length between the third sub-part Z3 of the first electrode 3 and the isolation structure 2 is the third unit length area, wherein the first unit length area is greater than the third unit length area; wherein, the first unit length area is the ratio of the total overlap area between the first sub-part Z1 of the first electrode 3 and the isolation structure 2 to the side length of the first side B1, and the third unit length area is the ratio of the total overlap area between the third sub-part Z3 of the first electrode 3 and the isolation structure 2 to the side length of the third side B3.

[0085] Understandably, considering the different lengths of the first side B1 and the third side B3, this embodiment compares the overlap area per unit length between the first sub-part Z1 of the first electrode 3 and the inner wall surface of the isolation structure 2, and the overlap area per unit length between the third sub-part Z3 of the first electrode 3 and the inner wall surface of the isolation structure 2, to accurately determine the overlap effect. If the first unit length area is greater than the third unit length area, it indicates that the overlap effect of the first sub-part Z1 on the inner wall surface of the isolation structure 2 corresponding to the first side B1 is better, which can reduce the impedance between the first electrode 3 and the isolation structure 2, thereby improving the performance of the display panel 10.

[0086] Optionally, the length of the third side B3 is less than the length of the second side B2.

[0087] Optionally, the third distance P3 is smaller than the second distance P2. When the first side B1 and the second side B2 are parallel, the first side B1 and the second side B2 can be effective overlapping edges of the first sub-part Z1 and the second sub-part Z2 formed corresponding to the line evaporation source. Since the length of the third side B3 is smaller than the length of the second side B2 and the first side B1, its impact on the overlapping effect is limited. By making the third distance P3 smaller than the second distance P2, the overlapping area of ​​the first sub-part Z1 can be maximized, sacrificing the overlapping effect of other sides, thereby maximizing the overall cathode overlapping effect and improving the display effect of the display panel.

[0088] Optionally, in a cross section along the thickness direction of the display panel 10, the length of contact between the second sub-part Z2 of the first electrode 3 and the inner wall surface of the isolation structure 2 is the second contact length J2, and the length of contact between the third sub-part Z3 of the first electrode 3 and the inner wall surface of the isolation structure 2 is the third contact length J3.

[0089] Through the inventor's research and experiments, it was found that the second contact length J2 is greater than the third contact length J3, and the overlap effect between the second sub-part Z2 and the inner wall surface of the isolation structure 2 is better than the overlap effect between the third sub-part Z3 and the inner wall surface of the isolation structure 2.

[0090] In some optional embodiments, the overlap area per unit length between the second sub-part Z2 of the first electrode 3 and the isolation structure 2 is the second unit length area, and the overlap area per unit length between the third sub-part Z3 of the first electrode 3 and the isolation structure 2 is the third unit length area, wherein the second unit length area is greater than the third unit length area; wherein, the second unit length area is the ratio of the total overlap area between the second sub-part Z2 of the first electrode 3 and the isolation structure 2 to the side length of the second side B2, and the third unit length area is the ratio of the total overlap area between the third sub-part Z3 of the first electrode 3 and the isolation structure 2 to the side length of the third side B3.

[0091] It is understandable that the area per unit length is greater than that per unit length, indicating that the second sub-part Z2 has a better overlap effect on the inner wall of the isolation structure 2 corresponding to the second side B2, which can reduce the impedance between the first electrode 3 and the isolation structure 2, thereby improving the performance of the display panel 10.

[0092] Please see Figure 2 , Figure 4 as well as Figure 5 In some optional embodiments, the first side B1 and the second side B2 are arranged opposite to each other and parallel to each other; the orthographic projection of the isolation opening K onto the substrate 1 also includes a fourth side B4, the length of the fourth side B4 is less than the length of the first side B1, the fourth side B4 and the third side B3 are arranged opposite to each other, and the extension direction of the fourth side B4 intersects the extension direction of the third side B3; the first electrode 3 also includes a fourth sub-part Z4, the fourth sub-part Z4 is the part of the first electrode 3 that overlaps with the isolation structure 2 corresponding to the fourth side B4; along the thickness direction of the display panel 10, the distance between the end of the fourth sub-part Z4 away from the substrate 1 and the surface where the first surface N1 is located is the fourth distance P4, and the first distance P1 is greater than the fourth distance P4.

[0093] It is understood that in this embodiment, the first side B1, the second side B2, the third side B3, and the fourth side B4 can form a trapezoid, with the first side B1 and the second side B2 corresponding to either the base or the top side of the trapezoid, and the third side B3 and the fourth side B4 corresponding to the two legs of the trapezoid.

[0094] Since the length of the fourth side B4 is less than the length of the first side B1, in this embodiment, the first distance P1 can be limited to be greater than the fourth distance P4, so that the overlapping area of ​​the isolation structure 2 corresponding to the first sub-part Z1 and the first side B1 is larger, thereby reducing the impedance between the corresponding isolation structure 2 of the first sub-part Z1 and the first side B1 and improving the display effect of the display panel 10.

[0095] Optionally, the length of the fourth side B4 is less than the length of the second side B2;

[0096] Optionally, the fourth distance P4 is smaller than the second distance P2, so that the overlapping area of ​​the isolation structure 2 corresponding to the second sub-part Z2 and the second side B2 is larger, thereby reducing the impedance between the corresponding second sub-part Z2 and the isolation structure 2 corresponding to the second side B2 and improving the display effect of the display panel 20.

[0097] Optionally, in a cross section along the thickness direction of the display panel 10, the length of contact between the second sub-part Z2 of the first electrode 3 and the inner wall surface of the isolation structure 2 is the second contact length J2, and the length of contact between the fourth sub-part Z4 of the first electrode 3 and the inner wall surface of the isolation structure 2 is the fourth contact length J4.

[0098] Through the inventor's research and experiments, it was found that the second contact length J2 is greater than the fourth contact length J4, and the overlap effect between the second sub-part Z2 and the inner wall surface of the isolation structure 2 is better than the overlap effect between the fourth sub-part Z4 and the inner wall surface of the isolation structure 2.

[0099] In some optional embodiments, the overlap area per unit length between the second sub-part Z2 of the first electrode 3 and the isolation structure 2 is the second unit length area, and the overlap area per unit length between the fourth sub-part Z4 of the first electrode 3 and the isolation structure 2 is the fourth unit length area, wherein the second unit length area is greater than the fourth unit length area; wherein, the second unit length area is the ratio of the total overlap area between the second sub-part Z2 of the first electrode 3 and the isolation structure 2 to the side length of the second side B2, and the fourth unit length area is the ratio of the total overlap area between the fourth sub-part Z4 of the first electrode 3 and the isolation structure 2 to the side length of the fourth side B4.

[0100] It is understandable that the area per unit length is greater than that per unit length, indicating that the second sub-part Z2 has a better overlap effect on the inner wall of the isolation structure 2 corresponding to the second side B2, which can reduce the impedance between the first electrode 3 and the isolation structure 2, thereby improving the performance of the display panel 10.

[0101] Please see Figure 6Optionally, the orthographic projection of the isolation opening K onto the substrate 1 also includes a fifth side B5 and a sixth side B6. The fifth side B5 is connected to the first side B1 and the third side B3 respectively, and the sixth side B6 is connected to the second side B2 and the fourth side B4 respectively. Correspondingly, the orthographic projection of the isolation opening K onto the substrate 1 is hexagonal.

[0102] Please see Figure 7 In some optional embodiments, the display panel 10 further includes a conductive layer disposed between the substrate 1 and the isolation structure 2; the conductive layer includes a data signal line DATA extending along a first direction Y, and the extension direction of the first side B1 is parallel to the first direction Y.

[0103] It should be noted that, in order to ensure the accuracy of the evaporation during the preparation of the first electrode 3, the line evaporation source used can extend along the first direction Y and move in a direction perpendicular to the first direction Y, so that the evaporation material is uniformly formed on the isolation structure 2 corresponding to the first side B1, ensuring that the first distance P1 and the second distance P2 meet the requirements.

[0104] Optionally, the extension direction of the second side B2 is parallel to the first direction Y.

[0105] Optionally, the display panel 10 also includes a scan signal line SCAN disposed on a different layer from the data signal line DATA. Optionally, the scan signal line SCAN extends along the second direction X.

[0106] Please see Figure 4 In some optional embodiments, the maximum thickness H1 of the first sub-part Z1 is greater than the maximum thickness H2 of the second sub-part Z2.

[0107] It should be noted that, in this embodiment, the maximum thickness H1 of the first sub-part Z1 and the maximum thickness H2 of the second sub-part Z2 can refer to the maximum thickness of the first sub-part Z1 and the second sub-part Z2 along their respective extending directions. Alternatively, for example, the maximum thickness H1 of the first sub-part Z1 and the maximum thickness H2 of the second sub-part Z2 can be the maximum thickness of the first sub-part Z1 and the second sub-part Z2 in the thickness direction of the display panel, such as... Figure 4 As shown, or the maximum thickness along the inner wall direction of the isolation structure 2 that overlaps with the first sub-part Z1 and the second sub-part Z2 respectively.

[0108] By increasing the maximum thickness H1 of the first sub-part Z1, the resistance of the first sub-part Z1 can be further reduced, the overlap impedance between the first sub-part Z1 and the isolation structure 2 can be improved, and the first distance P1 can be increased accordingly, so that the overlap area of ​​the first sub-part Z1 can be maximized, sacrificing the overlap effect of other sides, thereby maximizing the overall cathode overlap effect and improving the display effect of the display panel.

[0109] Alternatively, the average thickness of the first sub-part Z1 is greater than the average thickness of the second sub-part Z2.

[0110] It is understandable that, considering the properties of the vapor-deposited material, its formation location, and the manufacturing process, the thickness of the first sub-part Z1 varies along its extension direction perpendicular to itself. Through research and experiments, the inventors discovered that by adjusting the manufacturing process, the average thickness of the first sub-part Z1 can be made greater than the average thickness of the second sub-part Z2. This can further reduce the resistance of the first sub-part Z1, improve the overlap impedance between the first sub-part Z1 and the isolation structure 2, and correspondingly increase the first distance P1 corresponding to the first sub-part Z1, thereby increasing the overlap area and improving the impedance.

[0111] In this embodiment, the average thickness of the first sub-part Z1 and the average thickness of the second sub-part Z2 can refer to the average thickness of the first sub-part Z1 and the second sub-part Z2 along the direction perpendicular to their respective extension directions. Alternatively, the average thickness of the first sub-part Z1 and the average thickness of the second sub-part Z2 can be the average thickness of the first sub-part Z1 and the second sub-part Z2 in the thickness direction of the display panel, or the average thickness along the direction perpendicular to the inner wall surface of the corresponding overlapping isolation structure 2 of the first sub-part Z1 and the second sub-part Z2.

[0112] In the actual fabrication of the first electrode 3, since the first sub-part Z1 and the second sub-part Z2 are located near the edge of the first electrode 3 close to the isolation structure 2, they are shielded by the isolation structure 2. This results in the thickness of each of the first sub-part Z1 and the second sub-part Z2 being less than the thickness of the first electrode 3 that is not shielded by the isolation structure 2. Through research and experimentation, the inventors discovered that by adjusting the fabrication process so that the thickness of the first sub-part Z1 along its perpendicular extension direction is greater than the thickness of the second sub-part Z2 along its perpendicular extension direction, the resistance of the first sub-part Z1 can be further reduced, the overlap impedance between the first sub-part Z1 and the isolation structure 2 can be improved, and the overlap area can be increased, thus improving the impedance. In some optional embodiments, on a cross section along the thickness direction of the display panel 10, the length of contact between the first sub-part Z1 of the first electrode 3 and the inner wall surface of the isolation structure 2 is the first contact length J1, and the length of contact between the second sub-part Z2 of the first electrode 3 and the inner wall surface of the isolation structure 2 is the second contact length J2; wherein, the first contact length J1 is greater than the second contact length J2, and the inner wall surface of the isolation structure 2 is the surface of the isolation structure 2 facing the isolation opening K.

[0113] It should be noted that the cross section along the thickness direction of the display panel 10 may include a first plane and a second plane. Optionally, the first plane is perpendicular to the extension direction of the first side B1, and the second plane is perpendicular to the extension direction of the second side B2. The first contact length J1 is the length of the first sub-part Z1 of the first electrode 3 in contact with the inner wall surface of the isolation structure 2 on the first plane, and the second contact length J2 is the length of the second sub-part Z2 of the first electrode 3 in contact with the inner wall surface of the isolation structure 2 on the second plane.

[0114] Through the inventor's research and experiments, it was found that the first contact length J1 is greater than the second contact length J2, and the overlap effect between the first sub-part Z1 and the inner wall surface of the isolation structure 2 is better than the overlap effect between the second sub-part Z2 and the inner wall surface of the isolation structure 2.

[0115] In some optional embodiments, the overlap area per unit length between the first sub-part Z1 of the first electrode 3 and the isolation structure 2 is the first unit length area, and the overlap area per unit length between the second sub-part Z2 of the first electrode 3 and the isolation structure 2 is the second unit length area, wherein the first unit length area is greater than the second unit length area; wherein, the first unit length area is the ratio of the total overlap area between the first sub-part Z1 of the first electrode 3 and the isolation structure 2 to the side length of the first side B1, and the second unit length area is the ratio of the total overlap area between the second sub-part Z2 of the first electrode 3 and the isolation structure 2 to the side length of the second side B2.

[0116] Considering the difference in length between the first side B1 and the second side B2, this embodiment compares the overlap area per unit length between the first sub-part Z1 of the first electrode 3 and the inner wall surface of the isolation structure 2 and the overlap area per unit length between the second sub-part Z2 of the first electrode 3 and the inner wall surface of the isolation structure 2 to accurately determine the overlap effect. If the first unit length area is greater than the second unit length area, it indicates that the overlap effect of the first sub-part Z1 on the inner wall surface of the isolation structure 2 corresponding to the first side B1 is better, which can reduce the impedance between the first electrode 3 and the isolation structure 2, thereby improving the performance of the display panel 10.

[0117] Please see Figure 3 In some optional embodiments, along the direction away from the substrate 1, the isolation structure 2 includes a first sub-layer 21 and a second sub-layer 22 stacked together, the orthographic projection of the first sub-layer 21 onto the substrate 1 being located within the orthographic projection of the second sub-layer 22 onto the substrate 1; the first sub-part Z1 of the first electrode 3 is at least overlapped with the first sub-layer 21.

[0118] In this embodiment, the isolation structure 2 may include two parts: a first sub-layer 21 and a second sub-layer 22. The orthographic projection of the first sub-layer 21 onto the substrate 1 is located within the orthographic projection of the second sub-layer 22 onto the substrate 1. That is, the orthographic projection area of ​​the first sub-layer 21 onto the substrate 1 is less than or equal to the orthographic projection area of ​​the second sub-layer 22 onto the substrate 1. For example, when the orthographic projection area of ​​the first sub-layer 21 onto the substrate 1 is less than the orthographic projection area of ​​the second sub-layer 22 onto the substrate 1, the cross-sections of the first sub-layer 21 and the second sub-layer 22 may be in a shape similar to a "T" along the direction perpendicular to the plane of the substrate 1, so as to realize the patterned light-emitting functional layer 4 and the first electrode 3 using the isolation structure 2.

[0119] The first sub-part Z1 of the first electrode 3 is at least overlapped with the first sub-layer 21 to achieve signal transmission.

[0120] Please see Figure 8 In some optional embodiments, the isolation structure 2 further includes a third sublayer 23 located on the side of the first sublayer 21 opposite to the second sublayer 22, wherein the orthographic projection of the third sublayer 23 onto the substrate 1 is within the orthographic projection of the second sublayer 22 onto the substrate 1.

[0121] In this embodiment, the isolation structure 2 includes three parts: a first sub-layer 21, a second sub-layer 22, and a third sub-layer 23. The orthographic projection of the third sub-layer 23 onto the substrate 1 is located within the orthographic projection of the second sub-layer 22 onto the substrate 1. This means that the orthographic projection area of ​​the second sub-layer 22 onto the substrate 1 is greater than or equal to the orthographic projection area of ​​the third sub-layer 23 onto the substrate 1. For example, along the direction perpendicular to the plane of the substrate 1, the cross-sections of the first sub-layer 21, the second sub-layer 22, and the third sub-layer 23 can form a shape similar to an "I". The isolation structure 2 is used to realize the patterned light-emitting functional layer 4. Specifically, when evaporating the light-emitting material, the light-emitting material can be broken near the isolation structure 2 to form independent light-emitting units, thereby eliminating the need for a precision mask evaporation process and simplifying the manufacturing process of the display panel 10.

[0122] Optionally, the first sublayer 21, the second sublayer 22, and the third sublayer 23 all include conductive materials. For example, the first sublayer 21 includes aluminum, the second sublayer 22 includes titanium, and the third sublayer 23 includes molybdenum.

[0123] Please see Figure 3In some optional embodiments, the light-emitting functional layer 4 includes light-emitting units, which include a first light-emitting unit F1, a second light-emitting unit F2, and a third light-emitting unit F3. The first light-emitting unit F1 is used to emit light of a first color, the second light-emitting unit F2 is used to emit light of a second color, and the third light-emitting unit F3 is used to emit light of a third color. The display panel 10 includes a first isolation opening K1, a second isolation opening K2, and a third isolation opening K3. At least a portion of the first light-emitting unit F1 is located within the first isolation opening K1, at least a portion of the second light-emitting unit F2 is located within the second isolation opening K2, and at least a portion of the third light-emitting unit F3 is located within the third isolation opening K3.

[0124] In this embodiment, the orthographic projection shapes of the first isolation opening K1, the second isolation opening K2, and the third isolation opening K3 on the substrate 1 can be the same or different. Specifically, they can be selected according to the arrangement of the first light-emitting unit F1, the second light-emitting unit F2, and the third light-emitting unit F3. Different shapes can be set according to actual needs, thereby increasing the application scenarios of the display panel 10.

[0125] Optionally, the projected area of ​​the first isolation opening K1 on the substrate 1 is smaller than the projected area of ​​the second isolation opening K2 on the substrate 1, and the projected area of ​​the first isolation opening K1 on the substrate 1 is smaller than the projected area of ​​the third isolation opening K3 on the substrate 1; the projected pattern of the first isolation opening K1 on the substrate 1 includes a first side B1 and a second side B2.

[0126] That is, the first isolation opening K1 with the smallest area is projected onto the substrate 1 as a first side B1 and a second side B2. The corresponding first light-emitting unit F1 that emits light of the first color also has the smallest light-emitting area. The inventors have found that the smaller the light-emitting unit, the more sensitive it is to poor overlap. Therefore, in this embodiment of the invention, the first isolation opening K1 corresponding to the first light-emitting unit F1 with the smallest light-emitting area is projected onto the substrate 1 as a first side B1 and a second side B2, so as to ensure the overlap effect of the first electrode 3 corresponding to the first light-emitting unit F1 and improve the display effect.

[0127] Of course, depending on actual needs, the first isolation opening K1, the second isolation opening K2 and the third isolation opening K3 can all include the first side B1 and the second side B2 in the orthographic projection pattern of the substrate 1, so as to improve the light emission effect of each light-emitting unit.

[0128] like Figure 2As shown, the first side B1 may include the first side B11 of the orthographic projection of the first isolation opening K1 onto the substrate 1, the first side B12 of the orthographic projection of the second isolation opening K2 onto the substrate 1, and the first side B13 of the orthographic projection of the third isolation opening K3 onto the substrate 1. The second side B2 may include the second side B21 of the orthographic projection of the first isolation opening K1 onto the substrate 1, the second side B22 of the orthographic projection of the second isolation opening K2 onto the substrate 1, and the second side B23 of the orthographic projection of the third isolation opening K3 onto the substrate 1.

[0129] Optionally, the first side B1 of the first isolation opening K1, the first side B1 of the second isolation opening K2, and the first side B1 of the second isolation opening K2 are arranged in parallel with each other. This allows for the deposition of the first sub-part Z1 corresponding to the first side B1 of the first isolation opening K1, the first side B1 of the second isolation opening K2, and the first side B1 of the second isolation opening K2 without adjusting the relative angle between the deposition source and the display panel 10, thus simplifying the process and reducing the difficulty of preparation.

[0130] In some optional embodiments, the lengths of the first side B1 of the first isolation opening K1, the first side B1 of the second isolation opening K2, and the first side B1 of the third isolation opening K3 are all equal, so as to facilitate preparation without the need to adjust the equipment and simplify the process.

[0131] Optionally, the first sub-part Z1 of the first electrode 3 includes a first sub-part Z1 located in the first isolation opening K1, a first sub-part Z1 located in the second isolation opening K2, and a first sub-part Z1 located in the third isolation opening K3. The first distance P1 of the first sub-part Z1 located in the first isolation opening K1, the first distance P1 of the first sub-part Z1 located in the second isolation opening K2, and the first distance P1 of the first sub-part Z1 located in the third isolation opening K3 are all equal.

[0132] It is understandable that since the first distance P1 of the first sub-part Z1 located in the first isolation opening K1, the first distance P1 of the first sub-part Z1 located in the second isolation opening K2, and the first distance P1 of the first sub-part Z1 located in the third isolation opening K3 are all equal, when forming the first sub-part Z1 located in the first isolation opening K1, the first sub-part Z1 located in the second isolation opening K2, and the first sub-part Z1 located in the third isolation opening K3 using the vapor deposition equipment, it is not necessary to adjust the equipment, such as not needing to adjust the vapor deposition angle, to form each first sub-part Z1 accordingly, simplifying the process, ensuring the best overlapping effect, and the thickness of the first electrode 3 corresponding to each light-emitting unit can meet the requirements of effective light emission of the display panel 10.

[0133] Optionally, the second sub-part Z2 of the first electrode 3 includes a second sub-part Z2 located in the first isolation opening K1, a second sub-part Z2 located in the second isolation opening K2, and a second sub-part Z2 located in the third isolation opening K3. Correspondingly, the second distance P2 of the second sub-part Z2 in each isolation opening K is smaller than the first distance P1 of the first sub-part Z1 in each isolation opening K, so as to improve the overlap effect of the first sub-part Z1 on the inner wall surface of the isolation structure 2 corresponding to the first side B1, reduce the impedance between the first electrode 3 and the isolation structure 2, and improve the performance of the display panel 10.

[0134] Please see Figure 3 In some optional embodiments, the display panel 10 further includes: a pixel definition layer 6 disposed on the side of the isolation structure 2 close to the substrate 1, the pixel definition layer 6 having a pixel opening 61, the orthographic projection of the pixel opening 61 onto the substrate 1 being located within the orthographic projection of the isolation opening K onto the substrate 1, and at least a portion of the light-emitting functional layer 4 being located at the pixel opening 61.

[0135] Optionally, the orthographic projection pattern of the pixel opening 61 on the substrate 1 is identical in shape to the orthographic projection pattern of the isolation opening K on the substrate 1.

[0136] Optionally, the edge of the pixel opening 61 coincides with the edge of the effective light-emitting area of ​​the light-emitting unit, that is, the edge of the pixel opening 61 coincides with the edge of the sub-pixel mentioned below.

[0137] Optionally, the centroid of the orthographic projection of the pixel opening 61 onto the substrate 1 coincides with the centroid of the orthographic projection of the isolation opening K onto the substrate 1. That is, the orthographic projection of the pixel opening 61 onto the substrate 1 and the orthographic projection of the isolation opening K onto the substrate 1 can be similar shapes. The two shapes can be similar, such as trapezoids or hexagons, but the side lengths are in a certain proportion to improve the light output efficiency.

[0138] Specifically, the orthographic projection pattern of the pixel opening 61 on the substrate 1 has the same shape as the orthographic projection pattern of the isolation opening K on the substrate 1, and the edge of the orthographic projection pattern of the pixel opening 61 on the substrate 1 is conformally set relative to the edge of the orthographic projection pattern of the isolation opening K on the substrate 1. That is, the edge of the orthographic projection pattern of the pixel opening 61 on the substrate 1 and the edge of the opposite orthographic projection pattern of the isolation opening K on the substrate 1 are parallel to ensure that the light emitted from the pixel opening 61 is not blocked by the isolation structure 2, thereby improving the light emission efficiency.

[0139] Please see Figure 9In some optional embodiments, the display panel 10 further includes an encapsulation layer 7; the encapsulation layer 7 includes a first encapsulation layer 71, the first encapsulation layer 71 includes a plurality of first encapsulation units arranged at intervals from each other, the first encapsulation units are located on the side of the first electrode 3 away from the substrate 1, and at least some of the first encapsulation units also cover the sidewall of the isolation structure 2 facing the isolation opening K and extend to the side of the isolation structure 2 away from the substrate 1.

[0140] The first encapsulation unit is used to encapsulate the isolation opening K, reducing the oxidation and corrosion of the components inside the isolation opening K by external moisture, thereby improving the lifespan of the display panel 10.

[0141] Optionally, the material of the first encapsulation layer 71 may include inorganic materials. That is, the first encapsulation layer 71 is an inorganic encapsulation layer 7, which can be prepared by chemical vapor deposition, thereby improving the density of the first encapsulation layer 71 and thus improving the encapsulation effect of the encapsulation layer 7.

[0142] Optionally, the encapsulation layer 7 further includes a second encapsulation layer 72, which is located on the side of the first encapsulation layer 71 facing away from the substrate 1. The material of the second encapsulation layer 72 includes organic materials. That is, the second encapsulation layer 72 is an organic encapsulation layer 7, which can be prepared by inkjet printing, allowing the encapsulation layer 7 to have a suitable thickness.

[0143] Optionally, the encapsulation layer 7 may also include a third encapsulation layer 73 located on the side of the second encapsulation layer 72 facing away from the substrate 1, and the material of the third encapsulation layer 73 may include inorganic materials. That is, the third encapsulation layer 73 is an inorganic encapsulation layer 7, and adding another inorganic encapsulation layer 7 outside the organic encapsulation layer 7 can further improve the encapsulation effect of the encapsulation layer 7.

[0144] Optionally, the third encapsulation layer 73 is made of the same material as the first encapsulation layer 71. This allows the first encapsulation layer 71 and the third encapsulation layer 73 to be fabricated using the same equipment, simplifying the fabrication process of the display panel 10.

[0145] Optionally, the display panel 10 also includes a second electrode 5 located on the side of the light-emitting functional layer 4 facing the substrate 1; the orthographic projection of the second electrode 5 on the substrate 1 at least partially overlaps with the orthographic projection of the isolation opening K on the substrate 1.

[0146] The material of the second electrode 5 is generally a material with a high work function to improve hole injection efficiency. It can be gold (Au), platinum (Pt), titanium (Ti), silver (Ag), indium tin oxide (ITO), zinc tin oxide (IZO), or a transparent conductive polymer (such as polyaniline). For example, the first electrode layer 3 can be made of ITO-Ag-ITO composite material, without any special limitations.

[0147] Please see Figures 1 to 4 Another embodiment of the present invention provides a display panel 10, comprising: a substrate 1; an isolation structure 2 disposed on one side of the substrate 1, the isolation structure 2 having an isolation opening K, the orthographic projection of the isolation opening K onto the substrate 1 including a first side B1 and a second side B2, the length of the first side B1 being greater than the length of the second side B2; a light-emitting functional layer 4, the light-emitting functional layer 4 being at least partially located within the isolation opening K; and a first electrode 3, the first electrode 3 being located on the side of the light-emitting functional layer 4 away from the substrate 1 and overlapping with the isolation structure 2, the first electrode 3 including a first sub-part Z1 and a second sub-part Z2, the first sub-part Z1 being the portion of the first electrode 3 overlapping with the isolation structure 2 corresponding to the first side B1. The second sub-part Z2 is the part where the first electrode 3 overlaps with the isolation structure 2 corresponding to the second side B2; the unit length overlap area of ​​the first sub-part Z1 of the first electrode 3 and the isolation structure 2 is the first unit length area, and the unit length overlap area of ​​the second sub-part Z2 of the first electrode 3 and the isolation structure 2 is the second unit length area, and the first unit length area is greater than the second unit length area; wherein, the first unit length area is the ratio of the total overlap area of ​​the first sub-part Z1 of the first electrode 3 and the isolation structure 2 to the side length of the first side B1, and the second unit length area is the ratio of the total overlap area of ​​the second sub-part Z2 of the first electrode 3 and the isolation structure 2 to the side length of the second side B2.

[0148] The display panel 10 provided in this embodiment of the invention includes a substrate 1, an isolation structure 2, and a first electrode 3. The light-emitting functional layer 4 is at least partially located in the isolation opening K, so that the light emitted by the light-emitting functional layer 4 can be emitted through the isolation opening K. The length of the first side B1 of the isolation opening K in the orthographic projection pattern of the substrate 1 is greater than the length of the second side B2. In this embodiment, the overlap effect is accurately judged by comparing the overlap area per unit length between the first sub-part Z1 of the first electrode 3 and the inner wall surface of the isolation structure 2 and the overlap area per unit length between the second sub-part Z2 of the first electrode 3 and the inner wall surface of the isolation structure 2. The first unit length area is greater than the second unit length area, which indicates that the overlap effect of the first sub-part Z1 on the inner wall surface of the isolation structure 2 corresponding to the first side B1 is better, which can reduce the impedance between the first electrode 3 and the isolation structure 2, thereby improving the performance of the display panel 10.

[0149] In some optional embodiments, the first side B1 and the second side B2 are parallel. It should be noted that, considering the manufacturing cost and manufacturing difficulty, the first electrode 3 can be effectively connected by using the partial isolation structure 2 corresponding to the parallel first side B1 and the second side B2. When the first side B1 and the second side B2 are parallel, the corresponding isolation opening K can be in the orthographic projection pattern of the substrate 1 in the shape of a trapezoid, hexagon, etc.

[0150] Optionally, along the extension direction perpendicular to the first side B1, the first side B1 and the second side B2 are at least partially opposite each other to improve the regularity of the isolation opening K and facilitate the subsequent evaporation of the first electrode 3.

[0151] In some optional embodiments, the first side B1 is the longest side of the orthographic projection pattern of the isolation opening K on the substrate 1. It can be understood that the lengths of the other edges of the orthographic projection pattern of the isolation opening K on the substrate 1 are all less than the length of the first side B1, that is, the first distance P1 corresponding to the first sub-part Z1 is greater than the distance of the other parts of the first electrode 3 on the isolation structure 2.

[0152] Please see Figures 1 to 4 Another embodiment of the present invention provides a display panel 10, a substrate 1; an isolation structure 2 disposed on one side of the substrate 1, the isolation structure 2 having an isolation opening K, the orthographic projection of the isolation opening K on the substrate 1 including a first side B1 and a second side B2, the length of the first side B1 being greater than the length of the second side B2; a light-emitting functional layer 4, the light-emitting functional layer 4 being at least partially located within the isolation opening K; a first electrode 3, the first electrode 3 being located on the side of the light-emitting functional layer 4 away from the substrate 1 and overlapping with the isolation structure 2, the first electrode 3 including a first sub-part Z1 and a second sub-part Z2, the first sub-part Z1 being the portion of the first electrode 3 overlapping with the isolation structure 2 corresponding to the first side B1, the second sub-part Z2 being the portion of the first electrode 3 overlapping with the isolation structure 2 corresponding to the second side B2; the maximum thickness of the first sub-part Z1 being greater than the maximum thickness of the second sub-part Z2.

[0153] It should be noted that, in this embodiment, the maximum thickness H1 of the first sub-part Z1 and the maximum thickness H2 of the second sub-part Z2 can refer to the maximum thickness of the first sub-part Z1 and the second sub-part Z2 along their respective extension directions. Alternatively, for example, the maximum thickness H1 of the first sub-part Z1 and the maximum thickness H2 of the second sub-part Z2 can be the maximum thickness of the first sub-part Z1 and the second sub-part Z2 in the direction of the thickness of the display panel, or the maximum thickness along the direction perpendicular to the inner wall surface of the isolation structure 2 where the first sub-part Z1 and the second sub-part Z2 overlap.

[0154] By increasing the maximum thickness H1 of the first sub-part Z1, the resistance of the first sub-part Z1 can be reduced, the overlap impedance between the first sub-part Z1 and the isolation structure 2 can be improved, and the first distance P1 can be increased accordingly. This allows the overlap area of ​​the first sub-part Z1 to be maximized, sacrificing the overlap effect of other sides, thereby maximizing the overall cathode overlap effect and improving the display effect of the display panel.

[0155] In some optional embodiments, the first side B1 and the second side B2 are parallel. It should be noted that, considering the manufacturing cost and manufacturing difficulty, the first electrode 3 can be effectively connected by using the partial isolation structure 2 corresponding to the parallel first side B1 and the second side B2. When the first side B1 and the second side B2 are parallel, the corresponding isolation opening K can be in the orthographic projection pattern of the substrate 1 in the shape of a trapezoid, hexagon, etc.

[0156] Optionally, along the extension direction perpendicular to the first side B1, the first side B1 and the second side B2 are at least partially opposite each other to improve the regularity of the isolation opening K and facilitate the subsequent evaporation of the first electrode 3.

[0157] In some optional embodiments, the first side B1 is the longest side of the orthographic projection pattern of the isolation opening K on the substrate 1. It can be understood that the lengths of the other edges of the orthographic projection pattern of the isolation opening K on the substrate 1 are all less than the length of the first side B1, that is, the first distance P1 corresponding to the first sub-part Z1 is greater than the distance of the other parts of the first electrode 3 on the isolation structure 2.

[0158] Please see Figures 1 to 4 Another embodiment of the present invention provides a display panel 10, comprising: a substrate 1; an isolation structure 2 disposed on one side of the substrate 1, the isolation structure 2 having an isolation opening K, the orthographic projection of the isolation opening K onto the substrate 1 including a first side B1 and a second side B2, the length of the first side B1 being greater than the length of the second side B2; a light-emitting functional layer 4, the light-emitting functional layer 4 being at least partially located within the isolation opening K; and a first electrode 3, the first electrode 3 being located on the side of the light-emitting functional layer 4 away from the substrate 1 and overlapping with the isolation structure 2, the first electrode 3 including a first sub-part Z1 and a second sub-part Z2, the first sub-part Z1 being the first... The first electrode 3 overlaps with the isolation structure 2 corresponding to the first side B1, and the second sub-part Z2 overlaps with the isolation structure 2 corresponding to the second side B2. On the cross-section along the thickness direction of the display panel 10, the length of contact between the first sub-part Z1 of the first electrode 3 and the inner wall surface of the isolation structure 2 is the first contact length J1, and the length of contact between the second sub-part Z2 of the first electrode 3 and the inner wall surface of the isolation structure 2 is the second contact length J2. The first contact length J1 is greater than the second contact length J2, and the inner wall surface of the isolation structure 2 is the surface of the isolation structure 2 facing the isolation opening K.

[0159] The display panel 10 provided in this embodiment of the invention includes a substrate 1, an isolation structure 2, and a first electrode 3. The light-emitting functional layer 4 is at least partially located within the isolation opening K, allowing light emitted from the light-emitting functional layer 4 to exit through the isolation opening K. The length of the first side B1 of the isolation opening K in the orthographic projection pattern of the substrate 1 is greater than the length of the second side B2. A cross-section along the thickness direction of the display panel 10 may include a first plane and a second plane. Optionally, the first plane is perpendicular to the extension direction of the first side B1, and the second plane is perpendicular to the extension direction of the second side B2. The first contact length J1 is... On the first plane, the first sub-part Z1 of the first electrode 3 contacts the inner wall surface of the isolation structure 2. The second contact length J2 is the contact length of the second sub-part Z2 of the first electrode 3 with the inner wall surface of the isolation structure 2 on the second plane. Through research and experimentation, the inventors found that the first contact length J1 is greater than the second contact length J2. The overlap effect between the first sub-part Z1 and the inner wall surface of the isolation structure 2 is better than the overlap effect between the second sub-part Z2 and the inner wall surface of the isolation structure 2, thereby reducing the impedance between the first electrode 3 and the isolation structure 2 and improving the performance of the display panel 10.

[0160] In some optional embodiments, the first side B1 and the second side B2 are parallel. It should be noted that, considering the manufacturing cost and manufacturing difficulty, the first electrode 3 can be effectively connected by using the partial isolation structure 2 corresponding to the parallel first side B1 and the second side B2. When the first side B1 and the second side B2 are parallel, the corresponding isolation opening K can be in the orthographic projection pattern of the substrate 1 in the shape of a trapezoid, hexagon, etc.

[0161] Optionally, along the extension direction perpendicular to the first side B1, the first side B1 and the second side B2 are at least partially opposite each other to improve the regularity of the isolation opening K and facilitate the subsequent evaporation of the first electrode 3.

[0162] In some optional embodiments, the first side B1 is the longest side of the orthographic projection pattern of the isolation opening K on the substrate 1. It can be understood that the lengths of the other edges of the orthographic projection pattern of the isolation opening K on the substrate 1 are all less than the length of the first side B1, that is, the first distance P1 corresponding to the first sub-part Z1 is greater than the distance of the other parts of the first electrode 3 on the isolation structure 2.

[0163] Please see Figures 10 to 11Another embodiment of the present invention provides a display panel 10, comprising: a substrate 1; an isolation structure 2 disposed on one side of the substrate 1, the isolation structure 2 having an isolation opening K, the orthographic projection of the isolation opening K onto the substrate 1 including a first side B1 and a third side B3, the extension directions of the first side B1 and the extension directions of the third side B3 intersecting, and the length of the first side B1 being greater than the length of the third side B3; a light-emitting functional layer 4, the light-emitting functional layer 4 being at least partially located within the isolation opening K; and a first electrode 3, the first electrode 3 being located on the side of the light-emitting functional layer 4 away from the substrate 1 and overlapping with the isolation structure 2, the first electrode 3 including a first... The first sub-part Z1 and the third sub-part Z3 are: the first sub-part Z1 is the part where the first electrode 3 overlaps with the isolation structure 2 corresponding to the first side B1, and the third sub-part Z3 is the part where the first electrode 3 overlaps with the isolation structure 2 corresponding to the third side B3; the isolation structure 2 includes a first surface N1 close to the substrate 1. Along the thickness direction of the display panel 10, the distance between the end of the first sub-part Z1 away from the substrate 1 and the surface where the first surface N1 is located is a first distance P1, and the distance between the end of the third sub-part Z3 away from the substrate 1 and the surface where the first surface N1 is located is a third distance P3. The first distance P1 is greater than the third distance P3.

[0164] The display panel 10 provided in this embodiment of the invention includes a substrate 1, an isolation structure 2, and a first electrode 3. The light-emitting functional layer 4 is at least partially located in the isolation opening K so that the light emitted from the light-emitting functional layer 4 can be emitted through the isolation opening K. The length of the first side B1 is greater than the length of the third side B3. In this embodiment, the first distance P1 of the first sub-part Z1 corresponding to the first side B1 is greater than the third distance P3 of the third sub-part Z3 corresponding to the third side B3, so as to further increase the overlap area between the first sub-part Z1 and the isolation structure 2 corresponding to the first side B1. The larger the overlap area, the smaller the impedance between the corresponding first sub-part Z1 and the isolation structure 2 corresponding to the first side B1, thereby improving the display effect of the display panel 10, reducing the occurrence rate of dark spots or dark patches, and improving the reliability of the display panel 10.

[0165] In some alternative embodiments, the orthographic projection of the isolation opening K onto the substrate 1 further includes a second side B2, wherein the length of the first side B1 is equal to the length of the second side B2.

[0166] In some optional embodiments, the first side B1 and the second side B2 are arranged in parallel, and the extension direction of the first side B1 intersects the extension direction of the third side B3. Considering the manufacturing cost and manufacturing difficulty, the first electrode 3 is effectively connected by using the partial isolation structure 2 corresponding to the parallel first side B1 and the second side B2. When the first side B1 and the second side B2 are parallel, the corresponding isolation opening K can be in the orthographic projection pattern of the substrate 1 in the shape of a rectangle, rhombus, parallelogram, trapezoid, hexagon, etc.

[0167] In some optional embodiments, the orthographic projection of the isolation opening K onto the substrate 1 further includes a fourth side B4, with the first side B1 and the second side B2 being opposite and parallel to each other, and the third side B3 and the fourth side B4 being opposite and parallel to each other.

[0168] It is understood that, in this embodiment, the orthographic projection of the isolation opening K onto the substrate 1 includes four sides, which may correspond to a rectangular, parallelogram, or rhomboid shape.

[0169] In some optional embodiments, the first electrode 3 further includes a second sub-part Z2, which is the part of the first electrode 3 that overlaps with the isolation structure 2 corresponding to the second side B2; along the thickness direction of the display panel 10, the distance between the end of the second sub-part Z2 away from the substrate 1 and the surface where the first surface N1 is located is a second distance P2, and the first distance P1 is greater than or equal to the second distance P2.

[0170] It is understood that in this embodiment, the length of the first side B1 is equal to that of the second side B2. Correspondingly, the first distance P1 can be greater than the second distance P2, so as to increase the overlap area of ​​the isolation structure 2 corresponding to the first sub-part Z1 and the first side B1, reduce the impedance between the isolation structure 2 corresponding to the first sub-part Z1 and the first side B1, thereby improving the display effect of the display panel 10, reducing the occurrence rate of dark spots or dark patches, and improving the reliability of the display panel 10.

[0171] Alternatively, since the length of the first side B1 is equal to the length of the second side B2, and both are long sides, the first distance P1 can also be equal to the second distance P2. Correspondingly, there is no need to adjust the evaporation angle when preparing the first sub-part Z1 and the second sub-part Z2, which reduces the difficulty of preparation.

[0172] In some optional embodiments, the second distance P2 is greater than the third distance P3. When the first side B1 and the second side B2 are parallel, the first side B1 and the second side B2 can be effective overlapping edges of the first sub-parts Z1 and Z2 formed corresponding to the line evaporation source. Since the length of the third side B3 is less than the length of the second side B2 and the first side B1, its impact on the overlapping effect is limited. By making the third distance P3 less than the second distance P2, the overlapping area of ​​the first sub-part Z1 can be maximized, sacrificing the overlapping effect of other sides, thereby maximizing the overall cathode overlapping effect and improving the display effect of the display panel.

[0173] In some optional embodiments, in a cross section along the thickness direction of the display panel 10, the length of contact between the first sub-part Z1 of the first electrode 3 and the inner wall surface of the isolation structure 2 is the first contact length J1, and the length of contact between the third sub-part Z3 of the first electrode 3 and the inner wall surface of the isolation structure 2 is the third contact length J3; wherein, the first contact length J1 is greater than the third contact length J3, and the inner wall surface of the isolation structure 2 is the surface of the isolation structure 2 facing the isolation opening K.

[0174] It should be noted that the cross section along the thickness direction of the display panel 10 may include a first plane and a third plane. Optionally, the first plane is perpendicular to the extension direction of the first side B1, and the third plane is perpendicular to the extension direction of the third side B3. The first contact length J1 is the length of the first sub-part Z1 of the first electrode 3 in contact with the inner wall surface of the isolation structure 2 on the first plane, and the third contact length J3 is the length of the third sub-part Z3 of the first electrode 3 in contact with the inner wall surface of the isolation structure 2 on the third plane.

[0175] Through the inventor's research and experiments, it was found that the first contact length J1 is greater than the third contact length J3, and the overlap effect between the first sub-part Z1 and the inner wall of the isolation structure 2 is better than the overlap effect between the third sub-part Z3 and the inner wall of the isolation structure 2.

[0176] In some optional embodiments, the overlap area per unit length between the first sub-part Z1 of the first electrode 3 and the isolation structure 2 is the first unit length area, and the overlap area per unit length between the third sub-part Z3 of the first electrode 3 and the isolation structure 2 is the third unit length area, wherein the first unit length area is greater than the third unit length area; wherein, the first unit length area is the ratio of the total overlap area between the first sub-part Z1 of the first electrode 3 and the isolation structure 2 to the side length of the first side B1, and the third unit length area is the ratio of the total overlap area between the third sub-part Z3 of the first electrode 3 and the isolation structure 2 to the side length of the third side B3.

[0177] Considering the different lengths of the first side B1 and the third side B3, this embodiment compares the overlap area per unit length between the first sub-part Z1 of the first electrode 3 and the inner wall surface of the isolation structure 2 and the overlap area per unit length between the third sub-part Z3 of the first electrode 3 and the inner wall surface of the isolation structure 2 to accurately determine the overlap effect. If the first unit length area is greater than the third unit length area, it indicates that the overlap effect of the first sub-part Z1 on the inner wall surface of the isolation structure 2 corresponding to the first side B1 is better, which can reduce the impedance between the first electrode 3 and the isolation structure 2, thereby improving the performance of the display panel 10.

[0178] This invention also provides a display device, including the display panel 10 in any of the above embodiments.

[0179] The display device provided in this embodiment of the invention has the technical effects of the display panel 10 in any of the above embodiments. The explanations of the same or corresponding structures and terms in the above embodiments will not be repeated here.

[0180] The display panel 10 provided in the embodiments of the present invention can be an organic light-emitting diode (OLED) display panel 10, a quantum dot light-emitting diode (QLED) display panel 10, or a micro flat panel display panel 10 (Micro-OLED or Micro-LED), etc.

[0181] The display panel 10 in this application embodiment includes, but is not limited to, devices with display functions such as mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, and control panels.

[0182] The above are merely specific embodiments of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

[0183] It should also be noted that the exemplary embodiments mentioned in this application describe methods or systems based on a series of steps or apparatus. However, this application is not limited to the order of the above steps; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

Claims

1. A display panel, characterized in that, include: substrate; An isolation structure is disposed on one side of the substrate. The isolation structure has an isolation opening. The orthographic projection of the isolation opening onto the substrate includes a first side and a second side, and the length of the first side is greater than the length of the second side. A light-emitting functional layer, wherein the light-emitting functional layer is at least partially located within the isolation opening; The first electrode is located on the side of the light-emitting functional layer away from the substrate and overlaps with the isolation structure. The first electrode includes a first sub-part and a second sub-part. The first sub-part is the portion of the first electrode that overlaps with the isolation structure corresponding to the first side, and the second sub-part is the portion of the first electrode that overlaps with the isolation structure corresponding to the second side. The isolation structure includes a first surface near the substrate. Along the thickness direction of the display panel, the distance between the end of the first sub-part away from the substrate and the surface where the first surface is located is a first distance, and the distance between the end of the second sub-part away from the substrate and the surface where the first surface is located is a second distance. The first distance is greater than the second distance.

2. The display panel according to claim 1, characterized in that, The angle between the extension direction of the first side and the extension direction of the second side is greater than or equal to 0° and less than or equal to 10°; Preferably, the first side and the second side are parallel; Preferably, the first side and the second side are at least partially opposite each other along an extension direction perpendicular to the first side.

3. The display panel according to claim 1, characterized in that, Both the first side and the second side are straight sides, or at least one of the first side and the second side is a curved side.

4. The display panel according to claim 1, characterized in that, The first side is the longest side of the isolation opening in the orthographic projection pattern edge of the substrate; Preferably, the isolation opening has a polygonal shape in the orthographic projection of the substrate; Preferably, the isolation opening is hexagonal or trapezoidal in the orthographic projection pattern of the substrate.

5. The display panel according to claim 1, characterized in that, The isolation opening, in the orthographic projection of the substrate, also includes a third side, the extension direction of which intersects the extension direction of the first side, and the length of the third side is less than the length of the first side. The first electrode further includes a third sub-part, which is the portion where the first electrode overlaps with the isolation structure corresponding to the third side; Preferably, along the thickness direction of the display panel, the distance between the end of the third sub-part away from the substrate and the surface where the first surface is located is a third distance, and the third distance is less than the first distance; Preferably, in a cross-section along the thickness direction of the display panel, the length of contact between the first sub-part of the first electrode and the inner wall surface of the isolation structure is the first contact length, and the length of contact between the third sub-part of the first electrode and the inner wall surface of the isolation structure is the third contact length, wherein the first contact length is greater than the third contact length, and the inner wall surface of the isolation structure is the surface of the isolation structure facing the isolation opening. Preferably, the overlap area per unit length between the first sub-part of the first electrode and the isolation structure is a first unit length area, and the overlap area per unit length between the third sub-part of the first electrode and the isolation structure is a third unit length area. The first unit length area is greater than the third unit length area. The first unit length area is the ratio of the total overlap area between the first sub-part of the first electrode and the isolation structure to the length of the first side, and the third unit length area is the ratio of the total overlap area between the third sub-part of the first electrode and the isolation structure to the length of the second side.

6. The display panel according to claim 5, characterized in that, The length of the third side is less than the length of the second side; Preferably, the third distance is smaller than the second distance; Preferably, in a cross-section along the thickness direction of the display panel, the length of contact between the second sub-part of the first electrode and the inner wall surface of the isolation structure is the second contact length, and the length of contact between the third sub-part of the first electrode and the inner wall surface of the isolation structure is the third contact length, wherein the second contact length is greater than the third contact length; Preferably, the overlap area per unit length between the second sub-part of the first electrode and the isolation structure is the second unit length area, and the overlap area per unit length between the third sub-part of the first electrode and the isolation structure is the third unit length area. The second unit length area is greater than the third unit length area. The second unit length area is the ratio of the total overlap area between the second sub-part of the first electrode and the isolation structure to the length of the second side, and the third unit length area is the ratio of the total overlap area between the third sub-part of the first electrode and the isolation structure to the length of the third side.

7. The display panel according to claim 5, characterized in that, The first side and the second side are opposite to and parallel to each other; The isolation opening in the orthographic projection pattern of the substrate also includes a fourth side, the extension direction of the fourth side intersects the extension direction of the first side, the length of the fourth side is less than the length of the first side, and the fourth side and the third side are arranged opposite to each other. The first electrode further includes a fourth sub-part, which is the portion where the first electrode overlaps with the isolation structure corresponding to the fourth side; Along the thickness direction of the display panel, the distance between the end of the fourth sub-part away from the substrate and the surface where the first surface is located is the fourth distance, which is less than the first distance.

8. The display panel according to claim 7, characterized in that, The length of the fourth side is less than the length of the second side; Preferably, the fourth distance is smaller than the second distance; Preferably, in a cross-section along the thickness direction of the display panel, the length of contact between the second sub-part of the first electrode and the inner wall surface of the isolation structure is the second contact length, the length of contact between the fourth sub-part of the first electrode and the inner wall surface of the isolation structure is the fourth contact length, and the second contact length is greater than the fourth contact length. Preferably, the overlap area per unit length between the second sub-part of the first electrode and the isolation structure is the second unit length area, and the overlap area per unit length between the fourth sub-part of the first electrode and the isolation structure is the fourth unit length area. The second unit length area is greater than the fourth unit length area. The second unit length area is the ratio of the total overlap area between the second sub-part of the first electrode and the isolation structure to the length of the second side, and the fourth unit length area is the ratio of the total overlap area between the fourth sub-part of the first electrode and the isolation structure to the length of the fourth side.

9. The display panel according to claim 1, characterized in that, The display panel further includes a conductive layer disposed between the substrate and the isolation structure; The conductive layer includes data signal lines extending along a first direction. The extension direction of the first side is parallel to the first direction; Preferably, the extension direction of the second side is parallel to the first direction.

10. The display panel according to claim 1, characterized in that, The maximum thickness of the first sub-part is greater than the maximum thickness of the second sub-part; or, The average thickness of the first sub-part is greater than the average thickness of the second sub-part.

11. The display panel according to claim 1, characterized in that, In a cross section along the thickness direction of the display panel, the length of contact between the first sub-part of the first electrode and the inner wall surface of the isolation structure is the first contact length, and the length of contact between the second sub-part of the first electrode and the inner wall surface of the isolation structure is the second contact length. Wherein, the first contact length is greater than the second contact length, and the inner wall surface of the isolation structure is the surface of the isolation structure facing the isolation opening.

12. The display panel according to claim 1, characterized in that, The overlap area per unit length between the first sub-part of the first electrode and the isolation structure is the first unit length area, and the overlap area per unit length between the second sub-part of the first electrode and the isolation structure is the second unit length area. The first unit length area is greater than the second unit length area. Wherein, the first unit length area is the ratio of the total area of ​​the first sub-part of the first electrode overlapping with the isolation structure to the length of the first side, and the second unit length area is the ratio of the total area of ​​the second sub-part of the first electrode overlapping with the isolation structure to the length of the second side.

13. The display panel according to claim 1, characterized in that, Along a direction away from the substrate, the isolation structure includes a first sub-layer and a second sub-layer stacked together, with a first sub-part of the first electrode overlapping the first sub-layer; Preferably, the orthographic projection of the first sublayer onto the substrate lies within the orthographic projection of the second sublayer onto the substrate.

14. The display panel according to claim 13, characterized in that, The isolation structure also includes a third sublayer located on the side of the first sublayer facing away from the second sublayer, and the first sub-part and the second sub-part of the first electrode both overlap with the third sublayer; Preferably, the orthographic projection of the third sublayer onto the substrate lies within the orthographic projection of the second sublayer onto the substrate.

15. The display panel according to claim 1, characterized in that, The light-emitting functional layer includes light-emitting units, which include a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit. The first light-emitting unit is used to emit light of a first color, the second light-emitting unit is used to emit light of a second color, and the third light-emitting unit is used to emit light of a third color. The display panel includes a first isolation opening, a second isolation opening, and a third isolation opening. At least a portion of the first light-emitting unit is located within the first isolation opening, at least a portion of the second light-emitting unit is located within the second isolation opening, and at least a portion of the third light-emitting unit is located within the third isolation opening.

16. The display panel according to claim 15, characterized in that, The projected area of ​​the first isolation opening on the substrate is smaller than the projected area of ​​the second isolation opening on the substrate, and the projected area of ​​the first isolation opening on the substrate is smaller than the projected area of ​​the third isolation opening on the substrate. The first isolation opening, in its orthographic projection onto the substrate, includes the first side and the second side.

17. The display panel according to claim 15, characterized in that, The first isolation opening, the second isolation opening, and the third isolation opening all include the first side and the second side in their orthographic projections onto the substrate; The first side of the first isolation opening, the first side of the second isolation opening, and the first side of the third isolation opening are arranged in parallel to each other. Preferably, the lengths of the first side of the first isolation opening, the first side of the second isolation opening, and the first side of the third isolation opening are all equal; Preferably, the first sub-part of the first electrode includes a first sub-part located in the first isolation opening, a first sub-part located in the second isolation opening, and a first sub-part located in the third isolation opening, and the first distance between the first sub-part located in the first isolation opening, the first distance between the first sub-part located in the second isolation opening, and the first distance between the first sub-part located in the third isolation opening are all equal. Preferably, the second sub-part of the first electrode includes a second sub-part located within the first isolation opening, a second sub-part located within the second isolation opening, and a second sub-part located within the third isolation opening.

18. The display panel according to claim 1, characterized in that, Also includes: A pixel definition layer is disposed on the side of the isolation structure close to the substrate. The pixel definition layer is provided with a pixel opening. The orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the isolation opening on the substrate. At least a portion of the light-emitting functional layer is located in the pixel opening. Preferably, the centroid of the pixel opening in the orthographic projection pattern of the substrate coincides with the centroid of the isolation opening in the orthographic projection pattern of the substrate.

19. The display panel according to claim 1, characterized in that, The display panel also includes an encapsulation layer; The encapsulation layer includes a first encapsulation layer, which includes a plurality of first encapsulation units spaced apart from each other. The first encapsulation units are located on the side of the first electrode away from the substrate, and at least a portion of the first encapsulation units also cover the sidewall of the isolation structure facing the isolation opening and extend to the side of the isolation structure away from the substrate. Preferably, the material of the first encapsulation layer includes inorganic materials; Preferably, the encapsulation layer further includes a second encapsulation layer, which is located on the side of the first encapsulation layer opposite to the substrate, and the material of the second encapsulation layer includes an organic material; The encapsulation layer further includes a third encapsulation layer located on the side of the second encapsulation layer opposite to the substrate, and the material of the third encapsulation layer includes inorganic materials; Preferably, the display panel further includes a second electrode located on the side of the light-emitting functional layer facing the substrate; the orthographic projection of the second electrode on the substrate at least partially overlaps with the orthographic projection of the isolation opening on the substrate.

20. A display panel, characterized in that, include: substrate; An isolation structure is disposed on one side of the substrate. The isolation structure has an isolation opening. The isolation opening, when projected onto the substrate, includes a first side and a second side, wherein the length of the first side is greater than the length of the second side. A light-emitting functional layer, wherein the light-emitting functional layer is at least partially located within the isolation opening; The first electrode is located on the side of the light-emitting functional layer away from the substrate and overlaps with the isolation structure. The first electrode includes a first sub-part and a second sub-part. The first sub-part is the portion of the first electrode that overlaps with the isolation structure corresponding to the first side, and the second sub-part is the portion of the first electrode that overlaps with the isolation structure corresponding to the second side. The overlap area per unit length between the first sub-part of the first electrode and the isolation structure is the first unit length area, and the overlap area per unit length between the second sub-part of the first electrode and the isolation structure is the second unit length area. The first unit length area is greater than the second unit length area. The first unit length area is the ratio of the total overlap area between the first sub-part of the first electrode and the isolation structure to the length of the first side, and the second unit length area is the ratio of the total overlap area between the second sub-part of the first electrode and the isolation structure to the length of the second side.

21. The display panel according to claim 20, characterized in that, The first side and the second side are parallel; Preferably, the first side and the second side are at least partially opposite each other along an extension direction perpendicular to the first side; Preferably, the first side is the longest side of the isolation opening in the orthographic projection pattern edge of the substrate.

22. A display panel, characterized in that, include: substrate; An isolation structure is disposed on one side of the substrate. The isolation structure has an isolation opening. The isolation opening, when projected onto the substrate, includes a first side and a second side, wherein the length of the first side is greater than the length of the second side. A light-emitting functional layer, wherein the light-emitting functional layer is at least partially located within the isolation opening; The first electrode is located on the side of the light-emitting functional layer away from the substrate and overlaps with the isolation structure. The first electrode includes a first sub-part and a second sub-part. The first sub-part is the portion of the first electrode that overlaps with the isolation structure corresponding to the first side, and the second sub-part is the portion of the first electrode that overlaps with the isolation structure corresponding to the second side. The maximum thickness of the first sub-part is greater than the maximum thickness of the second sub-part.

23. The display panel according to claim 22, characterized in that, The first side and the second side are parallel; Preferably, the first side and the second side are at least partially opposite each other along an extension direction perpendicular to the first side; Preferably, the first side is the longest side of the isolation opening in the orthographic projection pattern edge of the substrate.

24. A display panel, characterized in that, include: substrate; An isolation structure is disposed on one side of the substrate. The isolation structure has an isolation opening. The orthographic projection of the isolation opening onto the substrate includes a first side and a second side, and the length of the first side is greater than the length of the second side. A light-emitting functional layer, wherein the light-emitting functional layer is at least partially located within the isolation opening; The first electrode is located on the side of the light-emitting functional layer away from the substrate and overlaps with the isolation structure. The first electrode includes a first sub-part and a second sub-part. The first sub-part is the portion of the first electrode that overlaps with the isolation structure corresponding to the first side, and the second sub-part is the portion of the first electrode that overlaps with the isolation structure corresponding to the second side. In a cross section along the thickness direction of the display panel, the length of contact between the first sub-part of the first electrode and the inner wall surface of the isolation structure is the first contact length, and the length of contact between the second sub-part of the first electrode and the inner wall surface of the isolation structure is the second contact length. Wherein, the first contact length is greater than the second contact length, and the inner wall surface of the isolation structure is the surface of the isolation structure facing the isolation opening.

25. The display panel according to claim 24, characterized in that, The first side and the second side are parallel; Preferably, the first side and the second side are at least partially opposite each other along an extension direction perpendicular to the first side.

26. The display panel according to claim 24, characterized in that, The first side is the longest side of the isolation opening in the orthographic projection pattern edge of the substrate.

27. A display panel, characterized in that, include: substrate; An isolation structure is disposed on one side of the substrate. The isolation structure has an isolation opening. The orthographic projection of the isolation opening onto the substrate includes a first side and a third side. The extension directions of the first side and the third side intersect, and the length of the first side is greater than the length of the third side. A light-emitting functional layer, wherein the light-emitting functional layer is at least partially located within the isolation opening; The first electrode is located on the side of the light-emitting functional layer away from the substrate and overlaps with the isolation structure. The first electrode includes a first sub-part and a third sub-part. The first sub-part is the portion of the first electrode that overlaps with the isolation structure corresponding to the first side, and the third sub-part is the portion of the first electrode that overlaps with the isolation structure corresponding to the third side. The isolation structure includes a first surface near the substrate. Along the thickness direction of the display panel, the distance between the end of the first sub-part away from the substrate and the surface where the first surface is located is a first distance. The distance between the end of the third sub-part away from the substrate and the surface where the first surface is located is a third distance. The first distance is greater than the third distance.

28. The display panel according to claim 27, characterized in that, The isolation opening in the orthographic projection of the substrate also includes a second side, and the length of the first side is equal to the length of the second side; Preferably, the isolation opening in the orthographic projection pattern of the substrate further includes a fourth side, wherein the first side and the second side are opposite to and parallel to each other, and the third side and the fourth side are opposite to and parallel to each other.

29. The display panel according to claim 28, characterized in that, The first electrode further includes a second sub-part, which is the portion where the first electrode overlaps with the isolation structure corresponding to the second side; Along the thickness direction of the display panel, the distance between the end of the second sub-part away from the substrate and the surface where the first surface is located is the second distance, and the first distance is greater than or equal to the second distance; Preferably, the first distance is greater than the second distance.

30. The display panel according to claim 28, characterized in that, The first electrode further includes a second sub-part, which is the portion where the first electrode overlaps with the isolation structure corresponding to the second side; Along the thickness direction of the display panel, the distance between the end of the second sub-part away from the substrate and the surface where the first surface is located is the second distance, which is greater than the third distance.

31. The display panel according to claim 27, characterized in that, In a cross section along the thickness direction of the display panel, the length of contact between the first sub-part of the first electrode and the inner wall surface of the isolation structure is the first contact length, and the length of contact between the third sub-part of the first electrode and the inner wall surface of the isolation structure is the third contact length. Wherein, the first contact length is greater than the third contact length, and the inner wall surface of the isolation structure is the surface of the isolation structure facing the isolation opening; Preferably, the overlap area per unit length between the first sub-part of the first electrode and the isolation structure is a first unit length area, and the overlap area per unit length between the third sub-part of the first electrode and the isolation structure is a third unit length area, wherein the first unit length area is greater than the third unit length area. Wherein, the first unit length area is the ratio of the total area of ​​the first sub-part of the first electrode overlapping with the isolation structure to the length of the first side, and the third unit length area is the ratio of the total area of ​​the third sub-part of the first electrode overlapping with the isolation structure to the length of the third side.

32. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 31.

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